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Ion acceleration using a laser pulse irradiating a thin disk target is examined using three-dimensional and two-dimensional particle-in-cell simulations. A laser pulse of $620$ TW, with an intensity of $5\times 10^{21}$ W/cm$^{2}$ and a…

Plasma Physics · Physics 2017-09-13 Toshimasa Morita

Electron capture processes are important in the search for new physics. In this context, a high capture rate is desired. We investigate the possibility of enhancing the electron capture rate by irradiating laser beam to ''atom''. The…

High Energy Physics - Phenomenology · Physics 2008-11-26 Takaaki Nomura , Joe Sato , Takashi Shimomura

Focused laser fields with textured polarization on a sub-wavelength scale allow extracting information on electronic processes which are not directly accessible by homogeneous fields. Here, we consider photoionization in radially and…

Atomic Physics · Physics 2021-06-30 Jonas Wätzel , Jamal Berakdar

Recently achieved high intensities of short laser pulses open new prospects in their application to hole boring in inhomogeneous overdense plasmas and for ignition in precompressed DT fusion targets. A simple analytical model and numerical…

Plasma Physics · Physics 2009-03-24 N. Naumova , T. Schlegel , V. T. Tikhonchuk , C. Labaune , I. V. Sokolov , G. Mourou

Photoionization by attosecond (as) extreme ultraviolet (xuv) pulses into the laser-dressed continuum of the ionized atom is commonly described in strong-field approximation (SFA), neglecting the Coulomb interaction between the emitted…

Atomic and Molecular Clusters · Physics 2015-05-20 C. -H. Zhang , U. Thumm

A spherically symmetric fluid code that includes the relativistic effects of hot electrons has been newly developed. In the present simulations, I attempt to implode a target shell of laser fusion using a nanosecond pulse; then, an…

Plasma Physics · Physics 2009-11-10 Mitsuru Honda

The effect of the laser linewidth on the resonance fluorescence spectrum of a two-level atom is revisited. The novel spectral features, such as hole-burning and dispersive profiles at line centre of the fluorescence spectrum are predicted…

Quantum Physics · Physics 2009-10-31 Peng Zhou , Mao-Fa Fang , Qing-Ping Zhou , Gao-Xiang Li

The steady-state quantum dynamics of three dipole-dipole coupled two-level emitters, fixed at the vertices of an equilateral triangle, and interacting via the environmental thermostat is investigated. We have analytically obtained the…

Quantum Physics · Physics 2026-02-23 Arthur Rotari , Mihai A. Macovei

We extend our theory of electron--hole recombination in organic light emitting diodes to investigate the possibility that high energy singlet and triplet excited states with large electron--hole separations are generated in such processes,…

Strongly Correlated Electrons · Physics 2007-05-23 Mousumi Das , S. Mazumdar , S. Ramasesha

We explore stimulated photo-association in the context of attosecond pump-probe schemes of atomic matter. An attosecond pulse -- the probe -- is used to induce photo-association of an electronic wave packet which had been created before,…

Atomic Physics · Physics 2009-11-13 Paula Rivière , Camilo Ruiz , Jan-Michael Rost

This work is dedicated to the study of radiation reaction signatures in the framework of classical and quantum electrodynamics. Since there has been no distinct experimental validation of radiation reaction and its underlying equations so…

High Energy Physics - Phenomenology · Physics 2015-06-18 Norman Neitz , Naveen Kumar , Felix Mackenroth , Karen Z. Hatsagortsyan , Christoph H. Keitel , Antonino Di Piazza

Attosecond bursts of coherent synchrotron-like radiation are found when driving ultrathin relativistic electron disks in a quasi-one-dimensional regime of wakefield acceleration, in which the laser waist is larger than the wake wavelength.…

Plasma Physics · Physics 2015-06-18 F. Y. Li , Z. M. Sheng , M. Chen , L. L. Yu , J. Meyer-ter-Vehn , W. B. Mori , J. Zhang

The effects of radiation reaction (RR) have been studied extensively by using the ultraintense laser interacts with the counter-propagating relativistic electron. At the laser intensity at the order of $10^{23}$ W/cm$^2$, the effects of RR…

Plasma Physics · Physics 2023-10-02 J. F. Ong , T. Moritaka , H. Takabe

At a warm linear collider the short time interval at which bunches will pass near each other in the interaction region may lead to significant alteration of the bunches positions. In this paper we quantify the intensity of this effect and…

Accelerator Physics · Physics 2009-11-10 Nicolas Delerue , Toshiaki Tauchi , Kaoru Yokoya

A free electron can temporarily gain a very significant amount of energy if it is overrun by an intense electromagnetic wave. In principle, this process would permit large enhancements in the center-of-mass energy of electron-electron,…

Accelerator Physics · Physics 2011-05-12 Kirk T. McDonald , Konstantine Shmakov

Electron excitations at silicon and 3C-SiC surfaces caused by an intense femtosecond laser pulse can be calculated by solving the time-dependent density functional theory and the Maxwell's equation simultaneously. The energy absorption,…

Applied Physics · Physics 2019-08-16 Tomohito Otobe

High-order harmonic generation (HHG) in simultaneous intense near-infrared (NIR) laser light and brilliant x rays above an inner-shell absorption edge is examined. A tightly bound inner-shell electron is transferred into the continuum.…

The mediated photon-photon interaction due to the resonant Kerr nonlinearity in an inhomogeneously broadened atomic vapor is considered. The time-scale for photon-photon scattering is computed and found to be determined by the inhomogeneous…

Optics · Physics 2009-11-06 M. W. Mitchell , R. Y. Chiao

We propose a novel protocol for storage and retrieval of photon wave packets in a $\Lambda$-type atomic medium. This protocol derives from spectral hole burning and takes advantages of the specific properties of solid state systems at low…

Quantum Physics · Physics 2011-06-14 R. Lauro , T. Chaneliere , J. -L. Le Gouet

The partial ionization of the solar plasma causes several nonideal effects such as the ambipolar diffusion, the Hall effect, and the Biermann battery effect. Here we report on the first three-dimensional realistic simulations of solar local…

Solar and Stellar Astrophysics · Physics 2020-11-04 P. A. Gonzalez-Morales , E. Khomenko , N. Vitas , M. Collados